Conveyance system for tensioning in order to post-treat a rapidly-solidified metal strip, and post-treatment method

Abstract

Conveyance system for tensioning in order to post-treat a rapidly-solidified metal strip, and post-treatment method is provided. The invention relates to a conveyance system (1 to 5) for tensioning in order to post-treat a rapidly-solidified metal strip (6), and a post-treatment method. For this purpose, the conveyance system comprises a tension roller assembly (6 to 11) and a tensioning assembly (12), between which the metal strip (6) is conveyed in order to be continuously post-treated under a predetermined tensile stress. The tension roller assembly (6 to 11) comprises a single drive roller (13) and a freely-rotating pressing roller (14). The metal strip (6) is conveyed over an angle of wrap α on the drive roller, and, with respect to the drive roller (13), the pressing roller (14) is arranged at a contact point (16) of the metal strip (6) that defines one end of an angle of wrap α.

The invention claimed is: 
     
       1. A conveyance system for tensioning in order to post-treat a metal strip, comprising:
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angle of wrap α on the drive roller; and 
 wherein, in relation to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α. 
 
     
     
       2. The conveyance system according to  claim 1 , wherein the angle of wrap α of the metal strip on the drive roller comprises between 0 and 180°. 
     
     
       3. The conveyance system according to  claim 1 , wherein the angle of wrap α of the metal strip on the drive roller comprises between 0 and 40°. 
     
     
       4. The conveyance system according to  claim 1 , wherein the pressing roller is arranged so as to be freely rotating on the contact point of the metal strip at the end of the angle of wrap α on the drive roller. 
     
     
       5. The conveyance system according to  claim 1 , wherein the drive roller has a width b RA , the pressing roller has a width b R1 , and the metal strip has a width b Band , and this widths (b Ra , b R1 , b Band ) are in the following relationship to one another: b Ra >b R1 >b Band . 
     
     
       6. A conveyance system for tensioning in order to post-treat a metal strip, comprising:
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angel of wrap α on the dive roller; and 
 wherein, in relation to the dive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α, wherein the angle of wrap α of the metal strip on the drive roller comprises between 0 and 40°. 
 
     
     
       7. A conveyance system for tensioning in order to post-treat a metal strip, comprising:
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angle of wrap α on the drive roller; and 
 wherein, in relation to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α, wherein the drive roller has a width b RA , the pressing roller has a width b R1 , and the metal strip has a width b Band , and these widths (b Ra , b R1 , b Band ) are in the following relationship to one another: b Ra >b R1 >b Band . 
 
     
     
       8. A conveyance system for tensioning in order to post-treat a metal strip, comprising:
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angle of wrap α on the drive roller; and 
 wherein, in relation to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α, 
 wherein the tensioning assembly has a braking function, the tensioning assembly includes a pressing roller having a construction identical to the pressing roller of the tension roller assembly, and the tensioning assembly has a brake roller of the same material and same size as the drive roller of the tension roller assembly. 
 
     
     
       9. The conveyance system according to  claim 8 , wherein the pressing rollers have a contact pressure force in the range of 15 to 150 N with surface pressures 7 to 10 MPa acting on the drive roller and/or the brake roller. 
     
     
       10. A conveyance system for tensioning in order to post-treat a metal strip, comprising:
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angle of wrap α on the drive roller; and 
 wherein, in relation to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α, 
 wherein the tensioning assembly has deflection rollers that transfer a force of gravity of a predetermined weight to the metal strip as a constant tensile force. 
 
     
     
       11. A conveyance system for tensioning in order to post-treat a metal strip, comprising:
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angle of wrap α on the drive roller; and 
 wherein, in relation to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α, 
 wherein the conveyance system made of the tensioning assembly and the tension roller assembly can be controlled so as to form a tensile stress of up to 1500 MPa on the metal strip. 
 
     
     
       12. A system for post-treating a rapidly-solidified metal strip, comprising:
 a conveyance system for tensioning in order to post-treat a metal strip, comprising: 
 a tension roller assembly, and 
 a tensioning assembly, 
 wherein the tension roller assembly comprises a single drive roller and a freely rotating pressing roller, 
 wherein the metal strip is conveyed between the tensioning assembly and the tension roller assembly in order to be continuously post-treated under tension, and the metal strip is conveyed over an angle of wrap α on the drive roller; and 
 wherein, in relation to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines an end of an angle of wrap α; and 
 a continuous furnace for heat-treating the metal strip, 
 wherein the tensioning assembly is arranged before the continuous furnace in a direction of passage and the tension roller assembly is arranged after the continuous furnace.